Try tuning the 15 meter input slug of the amp to where the vswr is nearer 1:1.
You may need to do this into a dummy load at low power from the transmitter to
give you the time to make correct adjustments as well as not have to be
concerned with other factors affecting your problem.
73,
Gary
WA6FGI
----- Original Message -----
From: R.Lake
To: amps@contesting.com
Sent: Monday, February 14, 2005 12:13 PM
Subject: [Amps] SB220 Questionn
I have a SB220 that is putting out approx 500w w/100w drive on 15m
only...input swr is showing abt 3:1..plate current abt 350ma..normal
HV...the rest of the bands are fine ...the band switch is relatively new
and I have Rich's parasitic stuff installed....
any ideas on where to look first?
Thanks for taking the time
Randy N1KWF
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